121 Colregs Midterm Quiz B 70
Midterm
- 1.
You are heading due north and observed a vessel's green light on your port beam, the vessel may be heading
- A.
Northward
- B.
Southward
- C.
Eastward
- D.
Westward
Correct Answer
A. NorthwardExplanation
If you are heading due north and you observe a vessel's green light on your port beam, it means that the vessel is on your left side. Since the green light is on the left side of a vessel, it indicates that the vessel is heading in the same direction as you, which is northward.Rate this question:
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- 2.
In restricted visibility you heard a sound signal of one long blast followed by four short blasts, what type of vessel she is
- A.
Power driven vessel
- B.
Pilot vessel
- C.
Not under command vessel
- D.
Restricted ability to maneuver vessel
Correct Answer
B. Pilot vesselExplanation
A vessel that emits a sound signal of one long blast followed by four short blasts is identified as a pilot vessel. Pilot vessels are responsible for guiding larger ships in and out of ports or other restricted areas. The specific sound signal is used to indicate their presence and communicate with other vessels in restricted visibility conditions.Rate this question:
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- 3.
What is the range of visibility of an inconspicuous, partly sumerged vessel being towee
- A.
1 mile
- B.
2 miles
- C.
Not required
- D.
3 miles
Correct Answer
D. 3 milesExplanation
The range of visibility of an inconspicuous, partly submerged vessel being towed is 3 miles. This means that the vessel can be seen from a distance of up to 3 miles by other vessels or observers. It is important for the safety of navigation to have a clear visibility range for such vessels to avoid any collisions or accidents.Rate this question:
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- 4.
What is the range of visibility of the side lights for a vessel 8 meters in lenght
- A.
3 miles
- B.
2 miles
- C.
1 mile
- D.
0.5 miles
Correct Answer
C. 1 mileExplanation
The range of visibility for the side lights of a vessel is determined by its length. In this case, since the vessel is 8 meters in length, the range of visibility for its side lights is 1 mile. This means that other vessels or objects in the vicinity can see the side lights of this vessel from a distance of up to 1 mile.Rate this question:
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- 5.
You detected a vessel 22.5 degrees forward of the beam by radar in restricted visibility, what will be your best action
- A.
Reduce speed
- B.
Turn to starboard
- C.
Sound one short blast on the whistle
- D.
Maintain course and spee
Correct Answer
A. Reduce speedExplanation
In restricted visibility, it is important to take immediate action to avoid a potential collision. Reducing speed is the best action to take as it allows more time to assess the situation and react accordingly. By reducing speed, the vessel can maneuver more easily if needed and also give other vessels more time to detect and avoid a potential collision.Rate this question:
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- 6.
What day shape is to be shown for a vessel constrained by draft making watc
- A.
Black cylinder
- B.
Three black ball in vertical
- C.
Not required, considering its making way
- D.
Two black balls in vertical
Correct Answer
A. Black cylinderExplanation
A vessel constrained by draft making way is required to display a black cylinder day shape. This day shape indicates to other vessels that the vessel has restricted maneuverability due to its draft and is unable to deviate from its course. The black cylinder is easily recognizable and helps other vessels to take necessary precautions while navigating near the constrained vessel.Rate this question:
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- 7.
You are a vessel aground, what additional signal shall be sounded to distinguish you from an achored vessel
- A.
3 strikes on the gong after 3 strikes on the bell
- B.
One long blast on the whistle followed by a bell for 5 seconds
- C.
3 strikes before and after a rapid ringing of the bell
- D.
Bell for 5 seconds forward and 5 seconds by gong aft
Correct Answer
C. 3 strikes before and after a rapid ringing of the bellExplanation
When a vessel is aground, it is important to distinguish it from an anchored vessel. The additional signal that should be sounded in this situation is 3 strikes before and after a rapid ringing of the bell. This combination of signals helps to clearly indicate that the vessel is aground and not simply anchored.Rate this question:
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- 8.
What are the lights to be shown by a vessel towing a barge alongside
- A.
Same as power driven vessel
- B.
Same as vessel towing of its length
- C.
Three aft masthead lights in vertical
- D.
A yellow tow light at the mast
Correct Answer
B. Same as vessel towing of its lengthExplanation
A vessel towing a barge alongside is required to display the same lights as a vessel towing of its length. This means that it should display the required navigation lights, such as red and green sidelights, a white stern light, and a yellow towing light at the mast. These lights are necessary to indicate the vessel's position, direction, and the fact that it is engaged in towing operations.Rate this question:
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- 9.
What is the maximum lenght of the vessel prescribed to exhibit a combine lantern
- A.
50 meters
- B.
Less than 50 meters
- C.
20 meters
- D.
Less than 20 meters
Correct Answer
C. 20 metersExplanation
The maximum length of the vessel prescribed to exhibit a combine lantern is 20 meters. This means that any vessel longer than 20 meters is not required to have a combined lantern.Rate this question:
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- 10.
A power driven vessel whose lenght is 55 meters towing another vessel where the lenght of tow is 150 meters, count the number of lights to be shown by the towing vessel
- A.
7 lights
- B.
5 lights
- C.
6 lights
- D.
8 lights
Correct Answer
A. 7 lightsExplanation
A power-driven vessel towing another vessel is required to display a certain number of lights to indicate its status and size. According to the International Regulations for Preventing Collisions at Sea (COLREGS), a towing vessel that is less than 50 meters in length must display 2 masthead lights, 2 sidelights, and 1 sternlight. In addition, if the length of the tow exceeds 200 meters, an additional white all-round light must be displayed. Therefore, in this scenario, the towing vessel is 55 meters long and the length of the tow is 150 meters, so the towing vessel would need to display a total of 7 lights.Rate this question:
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- 11.
Which of the following is not a requirement for a vessel navigating near an area of restricted visibility
- A.
She shall have her engines ready for immediate maneuver
- B.
She must sound an appropriate maneuvering signal
- C.
She must determined if risk of collision exists using the radar
- D.
She shall exhibit the appropriate light for its purpose
Correct Answer
B. She must sound an appropriate maneuvering signalExplanation
In a vessel navigating near an area of restricted visibility, it is not a requirement to sound an appropriate maneuvering signal. The other options listed are all necessary requirements in this situation. Having engines ready for immediate maneuver is important to ensure quick response to any potential hazards. Determining if the risk of collision exists using radar is crucial for navigation and avoiding accidents. Exhibiting the appropriate light for its purpose is necessary for other vessels to be aware of the presence and intentions of the navigating vessel. However, sounding a maneuvering signal is not specifically mentioned as a requirement in this scenario.Rate this question:
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- 12.
You heard a gond sounded by a vessel at anchor, what is the lenght of the vessel using it
- A.
120 meters
- B.
70 meters
- C.
36 meters
- D.
96 meters
Correct Answer
A. 120 metersExplanation
The length of the vessel can be determined by the length of the sound wave produced by the gond. Since the sound of the gond reached the listener, it means that the length of the sound wave is equal to the distance between the listener and the vessel. Therefore, the length of the vessel is 120 meters.Rate this question:
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- 13.
As officer on watch, what sound signal would be sounded if you are underway but stopped on the water
- A.
1 long blast
- B.
2 long blasts
- C.
1 short blast
- D.
1 long, 2 short blasts
Correct Answer
B. 2 long blastsExplanation
When a vessel is underway but stopped on the water, it indicates that the vessel is not moving but is still in operation. In this situation, the appropriate sound signal to be sounded is 2 long blasts. This signal is used to indicate that the vessel is not under command and is unable to maneuver as required by the International Regulations for Preventing Collisions at Sea (COLREGS). By sounding 2 long blasts, the vessel alerts other vessels in the vicinity about its limited ability to maneuver and warns them to take necessary actions to avoid a collision.Rate this question:
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- 14.
What will be the best action to take when you hear a for signal of another vessel forward of your port beam in fog
- A.
Maintain course and speed
- B.
Turn to port
- C.
Turn to starboard
- D.
Reduced speed
Correct Answer
A. Maintain course and speedExplanation
When you hear a fog signal of another vessel forward of your port beam, the best action to take is to maintain your current course and speed. This is because turning to either port or starboard could potentially put you on a collision course with the other vessel. By maintaining your course and speed, you allow the other vessel to determine your position and take appropriate action to avoid a collision. Additionally, reducing your speed may not be necessary if you are already traveling at a safe speed for the conditions.Rate this question:
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- 15.
What is the characteristic of a yellow light
- A.
Arc of visibility is 112.5 degrees
- B.
120 or more flashes per minute
- C.
Same as stern light
- D.
White light, visible at 135 degrees
Correct Answer
C. Same as stern lightExplanation
A yellow light has the same characteristic as a stern light. This means that it is a light that is visible from behind a vessel, indicating its position and direction of travel.Rate this question:
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- 16.
From your radar position you are 1 mile from the other vessel and her side lights is visible, what is the approximate lenght of the vessel
- A.
Less than 12 meters
- B.
20 to 50 meters
- C.
50 meters or more
- D.
No specified lenght
Correct Answer
D. No specified lenghtExplanation
The question states that the side lights of the other vessel are visible from a distance of 1 mile. However, it does not provide any information about the length of the vessel. Therefore, the correct answer is that there is no specified length for the vessel.Rate this question:
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- 17.
Using your binocular you observed a vessel forward of your beam showing a black cone apex up, what type of vessel she is
- A.
Power driven vessel
- B.
Sailing vessel propelled by machinery
- C.
Towing vessel
- D.
Vessel engaged in fishing
Correct Answer
D. Vessel engaged in fishingExplanation
The vessel showing a black cone apex up forward of your beam is most likely a vessel engaged in fishing. This is because vessels engaged in fishing are required to display a black cone apex up during daylight hours to indicate their activity. This cone-shaped signal helps other vessels identify and navigate around them safely.Rate this question:
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- 18.
What type of vessel exhibit a yellow light with the same characteristics as stern light in addition to the navigational lights
- A.
Tugboat
- B.
Any vessel able to tow
- C.
Power driven vessel
- D.
Non displacement craft
Correct Answer
B. Any vessel able to towExplanation
Any vessel that is able to tow other vessels would exhibit a yellow light with the same characteristics as a stern light in addition to the navigational lights. This is important for other vessels to recognize that the vessel is engaged in towing operations and to take appropriate action to avoid collision.Rate this question:
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- 19.
What is the lenght of the sailing vessel exhibiting red over green in vertical on its mast
- A.
Less than 12 meters
- B.
More than 50 meters
- C.
Less than 20 meters
- D.
Less than 50 meters
Correct Answer
B. More than 50 metersExplanation
The correct answer is "more than 50 meters." This means that the length of the sailing vessel exhibiting red over green in vertical on its mast is greater than 50 meters.Rate this question:
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- 20.
What will be the sound signal of a tugboat without a tow
- A.
One long blast followed by 2 short blasts
- B.
One long blast followed by 3 short blasts
- C.
One long blast
- D.
3 short blasts
Correct Answer
C. One long blastExplanation
A tugboat without a tow will produce a sound signal of one long blast. This signal is used to indicate that the tugboat is not towing any vessels or objects.Rate this question:
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- 21.
You are a power driven vessel and towing another vessel, what lights can be seen from your stern
- A.
Yellow light
- B.
White over yellow light
- C.
Yellow light over white light
- D.
White light
Correct Answer
C. Yellow light over white lightExplanation
When a power-driven vessel is towing another vessel, it must display a yellow light over a white light from its stern. The yellow light indicates that it is towing, while the white light is the standard stern light for a power-driven vessel. This configuration informs other vessels that the vessel is both power-driven and towing another vessel, allowing them to take appropriate action to avoid a collision.Rate this question:
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- 22.
You are asked by your duty officer to switch on your lights, how many lights in all will be visible if your vessel is N.U.C. underway and making way night, you are 112 meters in lenght
- A.
4 lights
- B.
5 lights
- C.
6 lights
- D.
Only the sidelights
Correct Answer
B. 5 lightsExplanation
If the vessel is N.U.C. (Not Under Command) and making way at night, a total of 5 lights will be visible. These lights include the sidelights (red and green), the stern light (white), the masthead light (white), and the towing light (yellow).Rate this question:
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- 23.
Who will display the towing diamond between the towing vessel and a vessel being towed if the tow is more than 200 meters
- A.
Both the tug and tow
- B.
The tug only
- C.
The tow only
- D.
Any of them
Correct Answer
A. Both the tug and towExplanation
The correct answer is both the tug and tow. When a tow is more than 200 meters, it is required for both the towing vessel (tug) and the vessel being towed to display the towing diamond. This diamond-shaped sign helps other vessels to identify that there is a tow in progress and take necessary precautions to avoid any collisions or accidents. By displaying the towing diamond, both the tug and tow ensure that they are visible to other vessels in the vicinity.Rate this question:
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- 24.
You are incharge of a power driven vessel in dense fog , you observed another vessel your radar with a distance of 1 mile on your starboard quarter, you should
- A.
Maintain your course and speed
- B.
Sound the danger signal
- C.
Sound one long blast
- D.
Alter course to port
Correct Answer
A. Maintain your course and speedExplanation
In this situation, maintaining your course and speed is the correct answer. This is because you have observed another vessel on your starboard quarter, which means it is behind and to the right of your vessel. By maintaining your course and speed, you are indicating to the other vessel that you are not changing your direction or speed, allowing them to maneuver around you safely. This is the appropriate action to take in order to avoid any potential collisions in the dense fog.Rate this question:
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- 25.
You are a power driven vessel in restricted visibility underway but stopped on the water, what appropriate sound signals you should be sounded
- A.
1 long blast
- B.
2 long blasts
- C.
1 long 2 short blasts
- D.
4 short blasts
Correct Answer
B. 2 long blastsExplanation
When a power-driven vessel is underway but stopped on the water in restricted visibility, it should sound two long blasts as the appropriate sound signal. This signal is used to indicate that the vessel is not moving and is at anchor or aground. It alerts other vessels in the vicinity to exercise caution and avoid any potential collision.Rate this question:
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- 26.
Which vessel is a stand on vessel between two vessels crossing in fog and not in sight of one another
- A.
The vessel which has the other on her own starboard side
- B.
Neither vessel is the stand on vessel
- C.
The vessel which has the other on her port side
- D.
The one who hears th fog signal first
Correct Answer
B. Neither vessel is the stand on vesselExplanation
In this situation, neither vessel is considered the stand on vessel. When two vessels are crossing in fog and not in sight of one another, both vessels are required to take action to avoid a collision. They should both alter their course and speed to avoid any potential collision. Therefore, neither vessel has the right of way or is considered the stand on vessel.Rate this question:
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- 27.
You are a vessel less than 12 meters in lenght navigating, what will be your lights at night
- A.
All round white mast light, side lights and stern light
- B.
All round white light on the mast
- C.
Side lights, stern light
- D.
All round white light on the mast, sidelight
Correct Answer
D. All round white light on the mast, sidelightExplanation
As a vessel less than 12 meters in length, the lights required at night are an all-round white light on the mast and sidelights. The all-round white light on the mast ensures that the vessel is visible from all directions, while the sidelights indicate the vessel's direction of travel. The combination of these lights helps to ensure the safety and visibility of the vessel during nighttime navigation.Rate this question:
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- 28.
You are a power driven vessel proceeding on a safe speed in restricted visibility and found another vessel forward of your starboard beam, your best action will be
- A.
Reduce speed to gain steerage
- B.
Alter course to starboard
- C.
Maintain course and speed
- D.
Alter course to port
Correct Answer
A. Reduce speed to gain steerageExplanation
In restricted visibility, it is important to take necessary actions to avoid collisions. Reducing speed to gain steerage is the best action in this situation. By reducing speed, the vessel will have better control and maneuverability, allowing it to avoid any potential collision with the vessel forward of the starboard beam. This action gives the vessel more time to assess the situation and make appropriate course alterations if needed.Rate this question:
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- 29.
Which vessel will exhibit only the sidelights and sternlight when underway and making way
- A.
A vessel engaged in fishing
- B.
R.A.M.
- C.
N.U.C.
- D.
P.D.V.
Correct Answer
A. A vessel engaged in fishingExplanation
A vessel engaged in fishing will exhibit only the sidelights and sternlight when underway and making way. This is because fishing vessels are considered to be restricted in their ability to maneuver, and they are required to display these lights to indicate their status to other vessels. The sidelights are green on the starboard side and red on the port side, while the sternlight is white and shines aft. By displaying these lights, the fishing vessel informs other vessels of its presence and indicates its direction of travel.Rate this question:
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- 30.
What light or lights is are visible when you are within the 22.5 degrees abaft the beam
- A.
Stern light
- B.
Masthead light and side light
- C.
Side lights and mast head light
- D.
Mast head light
Correct Answer
B. Masthead light and side lightExplanation
When you are within the 22.5 degrees abaft the beam, both the masthead light and the side light are visible. The masthead light is located at the highest point on the vessel, while the side lights are located on the port (left) and starboard (right) sides. These lights are required to be displayed during periods of restricted visibility or at night to indicate the vessel's position and direction to other vessels.Rate this question:
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- 31.
What is the maximum lenght of the vessel not required to exhibit lights and shape for vessel aground
- A.
Less than 12 meters
- B.
20 meters
- C.
More than 12 meters
- D.
11 meters
Correct Answer
D. 11 metersExplanation
Vessels that are less than 12 meters in length are not required to exhibit lights and shapes when aground. Therefore, the maximum length of a vessel that is not required to exhibit lights and shapes when aground is 11 meters.Rate this question:
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- 32.
How long is the interval between sound signals in restricted visibility
- A.
2 seconds
- B.
Not more than 2 seconds
- C.
Not more than 2 minutes
- D.
4 to 6 minutes
Correct Answer
C. Not more than 2 minutesExplanation
In restricted visibility, such as in fog or heavy rain, it is important for vessels to signal their presence to avoid collisions. The interval between sound signals is not more than 2 minutes. This means that vessels are required to sound their horn or whistle at least once every 2 minutes to alert other vessels of their presence. This helps to ensure that other vessels can take appropriate action to avoid a collision in the limited visibility conditions.Rate this question:
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- 33.
When does the light be exhibited and complied with
- A.
From sunrise to sunset
- B.
At all times
- C.
From sunset to sunrise
- D.
In all weather
Correct Answer
D. In all weatherExplanation
The correct answer is "in all weather" because the question is asking about the conditions under which the light should be exhibited and complied with. "In all weather" means that regardless of the weather conditions, the light should always be displayed and followed. This ensures safety and visibility for all parties involved, regardless of rain, fog, or any other weather condition.Rate this question:
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- 34.
Which vessel shows the same ights signal when underway or at anchor
- A.
Vessel engaged in fishing
- B.
A vessel constrain by draft
- C.
R.A.M.
- D.
N.U.C.
Correct Answer
A. Vessel engaged in fishingExplanation
A vessel engaged in fishing shows the same lights signal when underway or at anchor because it is required to display the same lights regardless of its status. This is to ensure the safety of other vessels in the vicinity and to communicate its presence and activities effectively. The lights signal for a vessel engaged in fishing includes a white masthead light, a white stern light, and two all-round red lights. These lights are displayed both when the vessel is underway and when it is at anchor, distinguishing it from other types of vessels.Rate this question:
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- 35.
A sailing vessel showing a cone apex down was observed from your port bow on a crossing situation, choose the best action to be done
- A.
Maintain course and speed as stand on vessel
- B.
Apply rule 18 for sailing vessel
- C.
Alter course to starboard as stand on vessel
- D.
Give way as she is a sailing vessel
Correct Answer
A. Maintain course and speed as stand on vesselExplanation
In this situation, the correct action is to maintain course and speed as the stand-on vessel. According to the International Regulations for Preventing Collisions at Sea (COLREGS), the vessel showing a cone apex down is a sailing vessel. As the stand-on vessel, you have the right of way and should maintain your course and speed to allow the other vessel to maneuver and pass safely.Rate this question:
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- 36.
A sailing vessel more than 20 meters underway at night, shall exhibit the following lights
- A.
White mast head light, side lights, stern light
- B.
All round white light on its mast, side light, stern light
- C.
Red over green on the mast, side light, stern light
- D.
Red over green on the mast below the masthead light, side lights, stern light
Correct Answer
C. Red over green on the mast, side light, stern lightExplanation
A sailing vessel more than 20 meters underway at night shall exhibit red over green lights on the mast, side lights, and stern light. This combination of lights helps other vessels determine the size and type of the sailing vessel and its direction of travel. The red over green lights indicate that the sailing vessel is a sailing vessel and not a power-driven vessel. The side lights and stern light ensure that the sailing vessel is visible from all angles, allowing other vessels to navigate safely around it.Rate this question:
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- 37.
You are a vessel having a length of 27 meters, what is the range of visibility of the stern light
- A.
5 miles
- B.
3 miles
- C.
2 miles
- D.
1 mile
Correct Answer
C. 2 milesExplanation
The range of visibility of the stern light on a vessel is determined by regulations and is typically limited to a certain distance to ensure the safety of other vessels. In this case, the correct answer is 2 miles, meaning that the stern light on the vessel can be seen from a distance of up to 2 miles by other vessels.Rate this question:
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- 38.
Which statement is true concerning a 100 meters power driven vessel under way at night
- A.
She must exhibit only the aft masthead light
- B.
She must exhibit the forward and aft masthead light
- C.
She must exhibit an all round white light
- D.
She must exhibit a day shape
Correct Answer
B. She must exhibit the forward and aft masthead lightExplanation
A 100 meters power driven vessel under way at night must exhibit the forward and aft masthead light. This is because according to international maritime regulations, vessels over 50 meters in length are required to display both the forward and aft masthead lights to indicate their position and direction of travel. The forward masthead light is a white light displayed at the front of the vessel, while the aft masthead light is also a white light displayed at the rear. These lights help other vessels determine the size, direction, and position of the vessel, ensuring safe navigation at night.Rate this question:
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- 39.
Two vessels are approaching each other in a crossing situation in restricted visibility, which of the two is the give way vessel
- A.
Either of the two
- B.
Both of them
- C.
The vessel who has the other on her portside
- D.
The vessel who has the other on her starboard side
Correct Answer
D. The vessel who has the other on her starboard sideExplanation
In a crossing situation in restricted visibility, the vessel that has the other on her starboard side is the give way vessel. This means that the vessel on the starboard side should yield and give way to the other vessel.Rate this question:
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- 40.
The lenght of your vessel is 108 meters, what is the visibility of the masthead light
- A.
1 mile
- B.
2 miles
- C.
5 miles
- D.
6 miles
Correct Answer
D. 6 miles -
- 41.
A dredger at anchor at nights, should exhibit
- A.
An anchor light for vessel of her lenght
- B.
Anchor light and an all round red over white light
- C.
All round lights the highest and lowest being red, the middle white
- D.
Not required to show anchor light
Correct Answer
D. Not required to show anchor lightExplanation
A dredger at anchor at night is not required to show an anchor light. This is because an anchor light is only required for vessels that are less than 50 meters in length. Since the question does not mention the length of the dredger, we cannot assume its length and therefore cannot conclude that it should exhibit an anchor light.Rate this question:
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- 42.
What is the appropriate sound signal to be sounded by a sea plane in restricted visibility
- A.
1 long blast
- B.
1 long 2 short blasts
- C.
2 long blasts
- D.
None of the above
Correct Answer
D. None of the aboveExplanation
In restricted visibility, a sea plane should sound a continuous horn or siren to alert other vessels of its presence. This is not represented by any of the options given, so the correct answer is "none of the above".Rate this question:
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- 43.
What is the lenght of a vessel engaged in trawling has the option to exhibit the required a masthead light
- A.
Less than 12 meters
- B.
Less than 50 meters
- C.
Less than 20 meters
- D.
More than 20 meters but less than 50 meters
Correct Answer
B. Less than 50 metersExplanation
A vessel engaged in trawling is required to exhibit a masthead light if its length is less than 50 meters. This means that if the vessel is longer than 50 meters, it is not required to display a masthead light.Rate this question:
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- 44.
A towing yellow light will be carried above a vessel's stern light
- A.
Only if she is towing astern
- B.
Only if the tow exceeds 200 meters
- C.
At anytime when towing
- D.
If the towing vessel is restricted her ability to maneuver
Correct Answer
C. At anytime when towingExplanation
A towing yellow light will be carried above a vessel's stern light at anytime when towing. This means that whenever a vessel is engaged in towing another vessel or object, it must display a yellow light above its stern light. This is to alert other vessels in the vicinity that the vessel is towing and may have limited maneuverability. The presence of the towing yellow light helps to ensure the safety of both the towing vessel and other vessels in the area.Rate this question:
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- 45.
At what lenght does a vessel aground not required to sound the appropriate signal for vessel aground
- A.
Less than 12 meters
- B.
More than 12 meters but less than 50 meters
- C.
Less than 7 meters
- D.
Less than 50 meters
Correct Answer
A. Less than 12 metersExplanation
According to international regulations, a vessel aground is not required to sound the appropriate signal if it is less than 12 meters in length. This means that smaller vessels, such as small boats or dinghies, do not need to sound any signals when they run aground. However, larger vessels over 12 meters in length are required to sound the appropriate signals to alert other vessels of their situation.Rate this question:
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- 46.
A vessel exhibit lights other than those prescribed by rules as long as the additional lights
- A.
Do not interfere with the keeping of a proper look out
- B.
Do not impair the range of visibility or distinctive character of the prescribed light
- C.
Can be mistaken for the lights specified elsewhere in the rule
- D.
All of the above
Correct Answer
A. Do not interfere with the keeping of a proper look outExplanation
The correct answer is "do not interfere with the keeping of a proper look out". This means that a vessel can exhibit additional lights as long as they do not hinder the ability to maintain a proper lookout for other vessels or potential hazards. It is important for vessels to have clear visibility and not obstruct their line of sight with any additional lights.Rate this question:
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- 47.
While underway by day, navigational lights must be displayed on your vessel
- A.
During all period of reduced visibility
- B.
Not necessary
- C.
Only when other vessels are in the area
- D.
At night only when vessels are detected by radar
Correct Answer
A. During all period of reduced visibilityExplanation
During periods of reduced visibility, such as fog or heavy rain, it is crucial to display navigational lights on your vessel. These lights help other vessels to identify and avoid your boat, preventing collisions. Navigational lights are especially important during the day when visibility is already reduced, as they enhance your vessel's visibility and increase safety on the water. Therefore, it is necessary to display navigational lights during all periods of reduced visibility.Rate this question:
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- 48.
Which of the following best describe a sailing vessel less than 20 meters
- A.
A red over green light near the top of the mast
- B.
A red over green below the combine lantern
- C.
A side light and an all around white light on the top of mast
- D.
A combined lantern near the top of the mast
Correct Answer
D. A combined lantern near the top of the mastExplanation
A sailing vessel less than 20 meters is best described by having a combined lantern near the top of the mast. This means that the vessel has a single lantern that combines both the red and green sidelights, which are required for vessels under 20 meters according to international maritime regulations. The combined lantern allows other vessels to easily identify the sailing vessel and determine its direction of travel at night or in low visibility conditions.Rate this question:
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- 49.
The rules concerning anchored vessel is best explained on what rule
- A.
Rule 30
- B.
Rule 32
- C.
Rule 31
- D.
Rule 22
Correct Answer
A. Rule 30Explanation
Rule 30 of the International Regulations for Preventing Collisions at Sea (COLREGS) specifically addresses the rules concerning anchored vessels. This rule outlines the actions that should be taken by both the anchored vessel and other vessels approaching it. It covers aspects such as the visibility of the anchor lights, the distance at which other vessels should keep from the anchored vessel, and the actions to be taken in case of potential collision. Therefore, Rule 30 is the most appropriate rule to refer to when seeking information about the rules concerning anchored vessels.Rate this question:
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- 50.
What lights should be displayed on the masthead for a pilot vessel not engaged in pilotage duty underway
- A.
An all around white masthead light
- B.
All round white light over red lights
- C.
A white mast head light
- D.
Two white lights in vertical
Correct Answer
A. An all around white masthead lightExplanation
A pilot vessel not engaged in pilotage duty underway should display an all-around white masthead light. This light is used to indicate the presence and position of the vessel to other vessels in the vicinity. It is a requirement for vessels to display the appropriate lights to ensure safe navigation and to avoid collisions at sea.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
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Dec 24, 2011Quiz Created by
Torah_tesay
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